hang up (someone's) gloves

Translations
завершить карьеру, уйти на пенсию
After 20 years in the boxing ring, he finally decided to hang up his gloves.
После 20 лет на боксерском ринге он наконец решил завершить карьеру.
Definitions
To retire or stop participating in a particular activity, especially a sport or profession. The phrase originates from athletes, particularly boxers, who would literally hang up their gloves when they decided to retire.